Adjustable cultivator.



No]. 847,142. PATENTBD MAR.- 12, 190'? W. WQLI,

ADJUSTABLE OULTIVA TOR.- APPLICATION FILED MAY 7,19Q6.

UNITED STATES PATENT OFFICE.

ADJUSTABLE CULTIVATOR.

Specification of Letters Patent.

Patented. March 12,1907.

Application filed May 7. 1906. Serial Ni). 315,657.

To all whom it may concern.-

Be it known that I, WILLIAM WOLF, a citizen ,of the United States,residing at Entiat, in the county of Chelan and State of Washington,have invented certain new and useful Improvements in AdjustableCultivators: and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to improvements in a combined harrow andcultivator, and more particularly to a framework especially ada ted tobe used as a harrow.

T e invention comprises the production of a plurality of frames madefrom any suitable material, preferably from bars of steel bent into thepro er shape and secured toether at their en s, harrow teeth or shanksor plow-shovels, and means for securing the same to the frame.

It further comprises the production of a peculiar draw-bar which extendsonly partially the length of the frame and is pivotally secured to oneend of the frame in such a manner as to permit the sections of the frameto be separated to a slight degree and elevated as may be desired bymeans of suitable handles secured to each section.

The object in view is the production of a harrow and cultivator combinedthat is made in sections, the sections being capable of independentmovement, so as to adapt the same to unevenness of the ground,,as wellas to permit the operator to raise either section at will from theground to clean the same of weeds and the like.

Another object in view is the production of a harrow and cultivatorcombined made from bar-iron bent into the proper contour and providedwith suitable means for interchangeably securing various forms of plowsor teeth to the frame.

With these and otherobj'ects in view the invention comprises certainother novel combinations and arrangements of parts, as will behereinafter more fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of myinvention, showing various teeth and plow structures secured thereto.

of a portion of my invention, showing one of the harrowsections elevatedand the corresponding positions of the draw-bar and yoke Fig. 2 is adetail perspective view when either section is in such raised position.Fig. 3 is a detail perspective view of the rear portion of the harrowembodying the features of my invention, showing a connecting-bar thatmay be used to hold the various sections apart.

It has been found difiicult to produce a harrow that is capable ofwithstanding the rough usages to which the same is applied withoutmaking the harrow of an undesirable weight, and it has also been founddesirable to produce harrows that are made in sections I and eachsection, as near as possible, to be under the immediate control of theoperator. These objects have been attained with more or less success;and it is among the objects of my invention to produce a harrow andcultivator that will attain the advantage above suggested.

In the embodiments of my invention as shown in the drawings 1 and 2indicate sections of a harrow-frame made according to my invention. Inmaking these frames I bend a preferably flat bar into the desired shapeand secure the same at 3 and 4. From 3 and 4 the bars extend outwardlyand are bent into a compound curve, so as to produce securing portionsor ends 5 and 6. The ends 5 and 6 are preferably positioned so as to bein a direct line from the corners 7 and 8, so that when the power isapplied at the ends 5 and 6 the harrow will be propelled in such amanner as to permit the ends 7 and 8 merely to touch or, if desired, totravel slightly apart. If desired, a bar or link 9 may be pivotallysecured to the sections 1 and 2 by suitable bolts 10 and 11 for spacingthe sections apart. The bar 9 is provided with any suitable number ofapertures, as 12 12, for permitting any desired adjustment of distancebetween the harrow-sections. If desirable, anumber of apertures, as 1313, may be placed in the harrow-sections to also be used 1n adjustingthe distance between the harrow-sections when the bar 9 is used.

At the forward end of the harrow is provided a draw-bar 14, which has ahook portion 15 provided with any suitable number of apertures forattaching means for pro at ling the harrow. The draw-bar 14 is swe ledor enlarged at 16 and is rounded, so as to permit the ends 5 and 6 topivot horizon-tally thereon. An elongated aperture, as 17, is formed inthe draw-bar 14 for accommodating a securing-bolt 18, which alsoprojects through the ends 5 and 6 of the harrow-sec- 'oted on theenlarged portion 16, and thus allow the sections to be spread or broughttogether, as may be desired, in order to avoid rocks or otherobstructions in the field.

The draw-bar 14 extends only a short distance from the front of theharrow and is reduced in size and threaded, as 19, and is adapted topass through a yoke 20, secured to a cross-bar 21, which rests upon thefront end of the sections 1 and 2. When power is applied to the draw-bar14, the cross-bar 21 presses upon the sections 1 and 2 to a greater orless extent, according to which of the ap ertures 22 the power isapplied to. justing the ower to the various apertures the harrow isforced to a greater or less extent to enter the earth by means of thecrossbar 21 pressing upon the ends of the sections 1 and 2. Thispressure is equal, whether one of the sections is raised or not. This issecured by means of the threaded end 19 of the draw-bar 14 beingpivotally mounted in the yoke 20, which permits either or both ends ofthe bar 21 to be raised, but exerts an equal pressure on the ends of thebar 21 regardless of the position of the same.

. Secured to the frame 1 and 2 is any suitable number of harrow-teeth23, or, if desirable, plows may be secured in place of the harrow-teeth23. I have shown in the drawingsboth harrow-teeth 23 and plows, as 24,secured to the frames 1 and 2 by means of suitable shanks 25. In orderto secure these low-shanks or harrow-teeth firmly in place,

provide a-securing means, as 26, which is .referably made from a blockof steel and as a portion removed therefrom, so as to leave a'recess 27.

The recess 27 is made'of such a size as to fit the bars of the frames 1and 2. The securing means 26 is also provided with an aperture 28, whichmay be of any desired contour for accommodating either the s uare-shapedharrow-teeth 23 or the oblong-s aped shank (in cross-section) 25 of theplow 24. After the securing-blocks 26 have been fastened in position theharrow-teeth or plow-shank is passed through the aperture 28 and issecurely held in any desired position by means of a set-screw, as 30. Inproviding the shanks 25 and the harrow-teeth 23 I preferably formtherein a plurality of countersunk portions, as 31, which are placed ata suitable distance apart and are adapted to coincide or register withthe set-screw 30. i In this way with but small resistance the set-screwma firmly hold the plow-shanks or harrow-test in position in thesecuring device 26. In operation when strain is applied to theharrow-teeth or shank portions of the plows a twisting motion is ofcourse applied to the securing means 26 but as the same partially Byad-.

surrounds one of the bars constituting the frames 1 and 2 the strain issustained by the block 26 and not by the set-screw 30. From this it willbe seen that the function of the set-screw 30 is primarily for holdingthe l shanks of the plows and the harrow-teeth in any desired horizontalplane.

By constructing the harrow of a plurality of sections made from bar-ironbent into the desired shape I produce a plow that is strong and capableof resisting all the usual strains and jars incident to the use of aharrow.

By my construction of harrow I may use a complete set of harrow-teeth,and thus have a simple harrow, or, if desired, I may use plows or simplycultivator-shovels, or may, if desirable, use any combination of thesetools for the various work desired. In forming the harrow in sectionsand pivoting the same to a draw-bar in the manner as above described aharrow is produced that will be easily operated and particularly adaptedto harrowing rough. soil and bad places in the field, as either of thesections may be moved to oneside or raised, as may be desired. This easymanipulation and ready adjustment of the harrow-sections to theunevenness of the soil is of great advantage and one of the mainfeatures of this invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a device of the character described, the combination of adraw-bar, a plurality of frames carrying cultivating members and looselyconnected to an intermediate portion of the draw-bar, and a cross-barloosely connected to the draw-bar and engaging the before-mentionedframes to hold the cultivating members carried thereby to their work.

2. In a device of the character described, the combination of adraw-bar, a plurality of frames loosely connected to an intermediateportion of the draw-bar, and a cross-bar loosely connected to the rearportion of the draw-bar and bearing against the top of the frameswhereby the cultivating members carried thereby are held to their work.

3. In a device of the character described, the combination of a draw-barhaving one end thereof reduced in cross-section, a plurality of framescarrying cultivating members and loosely connected to an intermeeledonthe reduced end of the draw-bar, and a cross-bar carried by the yokeand engaging with the frames to hold the cultivating members carriedthereby to their work.

4. A harrow comprising a plurality of sections having teeth securedthereto, a drawbar pivotally secured to said sections, a yoke pivotallymounted on one end of said drawar and a bar secured to said yoke forholding the harrow to its work.

diate portion of the draw-bar, a yoke swiv- 5. In a device of thecharacter described, the combination of a draw-bar, a pair oflaterally-swinging frames pivotally connected to an intermediate portionof the draw-bar and carrying cultivating members and a cross-bar looselyconnected to the rear portion of the draw-bar and engaging with theframes to hold the cultivatingmembers carried thereby to their work.

6. The combination of a draw-bar provided with a laterally-enlargedportion and having a laterally-disposed aperture passing 1 through thesaid enlarged portion, a pin disposed within the aperture, and framesconnected to opposite ends of the pin and pivoted upon the said enlargedportion so as to swing laterally.

In testimony whereof I afiix my signature in presence of two witnesses.

G. WARD KEMP, MARK WHELAN.

